At least three people are in critical condition after Thursday morning’s explosion at the Williams Olefins plant in Geismar, Baton Rouge area hospitals said. Many other patients in good condition have already been released.

One critical patient is at Baton Rouge General, and two are at Our Lady of the Lake Regional Medical Center in Baton Rouge.

Baton Rouge General saw a total of 14 patients, including seven who had been treated and released as of Thursday at about 3:20 p.m. Some of the patients will need to return for outpatient burn care, hospital officials said.

Five burn patients were admitted to Baton Rouge General, including one in critical condition, one in serious condition, two in fair condition and one in good condition.

Our Lady of the Lake received 12 patients, and nine of them have been discharged so far. The patients had injuries including burns, fractured bones, and neck, back, abdominal and chest injuries, the hospital said.

St. Elizabeth Hospital in Gonzales received 36 patients, all of whom were in good or fair condition. Eighteen of them had been released by Thursday afternoon.